Summary
The BCEI gene codes for a small secreted protein and is expressed in the human mammary tumour cell line MCF7 under oestrogen control and in some breast cancers. We have mapped the gene to chromosome 21 using a panel of somatic hybrid lines, and in situ hybridization has allowed a precise assignment to band 21q223. Two restriction fragment length polymorphisms (RFLP) are described that should be of use in linkage or population studies to test a possible involvement of the BCEI gene in genetic predisposition to breast cancer. This gene should also be a useful marker for the genetic and physical mapping of chromosome 21, and for a better definition of the region involved in the clinical phenotype of Downs syndrome.
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Moisan, JP., Mattei, MG. & Mandel, JL. Chromosome localization and polymorphism of an oestrogen-inducible gene specifically expressed in some breast cancers. Hum Genet 79, 168–171 (1988). https://doi.org/10.1007/BF00280558
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DOI: https://doi.org/10.1007/BF00280558